diff --git a/dfhack/CMakeLists.txt b/dfhack/CMakeLists.txt
index 54841700e..546b84f61 100644
--- a/dfhack/CMakeLists.txt
+++ b/dfhack/CMakeLists.txt
@@ -25,6 +25,7 @@ APIPrivate.cpp
 DFTileTypes.cpp
 DFVector.cpp
 DFHackAPI_C.cpp
+DFTypes_C.cpp
 
 depends/md5/md5.cpp
 depends/md5/md5wrapper.cpp